Climate

Annual number of days with temperatures above 15°C .

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Authors:

Afonin, A.N., Li, Y.S., Lipiyaynen, K.L., Tsepelev, V.Y.

Compilation date:

15.10.2005.

Scale:

10 km/pix

Map's precision:

The map contains the annual number of days with temperatures above 15°C for patches of the earth's surface with the area of 10 x 10 km. The layer has been derived by way of calculation using layers of average monthly air temperatures.

Projection:

"Albers Equal Area for the USSR":
ref. system : Albers Equal Area Conic for Russia
projection : Albers Equal Area Conic
datum : Pulkovo 1942 (S42)
delta WGS84 : 28 -130 -95
ellipsoid : Krasovsky
major s-ax : 6378245.000
minor s-ax : 6356863.019
origin long : 100
origin lat : 0
origin X : 0
origin Y : 0
scale fac : na
units : m
parameters : 2
stand ln 1 : 44
stand ln 2 : 68

Main contents:

A bitmapped map containing the annual number of days with temperatures above 15°C.

Classifier precision:

The number of days is expressed as an integer.

Map compilation procedure:

The layer has been derived by way of calculation on using layers of average monthly air temperatures (Afonin et al., 2006). The calculation followed the general procedure (Losev, А.P., 1994) of the Idrisi program involving macro programming. "-100" marks the pixels outside the atlas.

Data sources:

Afonin, A.N., Lipiyaynen, K.L., Tsepelev, V.Y. 2006. Maps of average annual air temperature. In: Afonin, А.N., Grinn, S.L., Dzyubenko, N.I., Frolov, А.N. Interactive Atlas of Useable Plants, Their Pests and Ecological Factors in Russia and Neighboring Countries. [Internet-version 1.0]. St. Petersburg, Russia. St. Petersburg State University, Faculty of Geography. https://agroatlas.ru
Losev, А.P. 1994. Training for Agrometeorological Provision for Plant Cultivation. St. Petersburg. 244 p.